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Rezolvati:  (2^7-1):(1+2^63:4^30+6x3^30:81^7)=?

Răspuns :

(2^7-1):(1+2^63:4^30+6x3^30:81^7)=
=(2^7-2°): (1+2^63:2^60+2*3^31:3^4*7)=(2^7-2°): (1+2^63-60+2*3^31-28)=
=(2^7-2°): (1+2^3+2*3^3)=(128-1):((1+8+2*27)=127:63